2638 results about "Liquid circulation" patented technology

A liquid circulation apparatus includes: a plurality of liquid ejection elements each of which includes a nozzle, a pressure chamber which is connected to the nozzle and accommodates liquid, and a piezoelectric element which displaces a wall of the pressure chamber to eject the liquid in the pressure chamber through the nozzle; a plurality of individual supply channels which are respectively connected to the liquid ejection elements; a common supply channel which is connected to the individual supply channels, the liquid being supplied from the common supply channel to the liquid ejection elements through the individual supply channels; a plurality of individual circulation channels which are respectively connected to the liquid ejection elements; a common circulation channel which is connected to the individual circulation channels, the liquid being circulated from the liquid ejection elements to the common circulation channel through the individual circulation channels; and a control device which controls a circulation volume of the liquid circulated from the liquid ejection elements to the common circulation channel, by adjusting a supply volume of the liquid supplied from the common supply channel to the liquid ejection elements in accordance with an ejection volume of the liquid ejected from the liquid ejection elements.

The invention provides a vehicle battery thermal management system, and belongs to the technical field of automobile batteries. The vehicle battery thermal management system solves the problem that battery thermal management in the prior art is not accurate and timely and comprises a first liquid circulation loop, wherein the first liquid circulation loop consists of a battery pack, a water tank, a water pump and a radiator; a cooling structure and a heater are sequentially connected between the water pump and the battery pack to form a second liquid circulation loop; solenoid valves which only control respective liquid circulation loop are arranged on the first liquid circulation loop and the second liquid circulation loop; a temperature sensor is arranged on the battery pack; a battery management unit, the temperature sensor, the water pump, a first solenoid valve, a second solenoid valve, the cooling structure and the heater are connected with a complete vehicle controller; and the complete vehicle controller can receive a detection signal of the temperature sensor, process the detection signal, and send a control signal to control the operation of the water pump, the two solenoid valves, the cooling structure, the heater and the battery management unit. The system can accurately and timely judge a battery thermal environment and perform effective adjustment.

A liquid circulation heating system includes a heat pump for producing a heated liquid and a heating radiator. The heat pump has a heat pump circuit for circulating a refrigerant to heat a liquid. The refrigerant contains tetrafluoropropene and difluoromethane as main components. According to the liquid circulation heating system having such a configuration, a negative impact on global warming can be reduced.

A leak detection apparatus includes one or more detection devices that envelope the various pipe joints of a liquid circulation cooling system. In one approach, the detection devices include a pair of conductors separated by a wicking material impregnated with a crystalline salt that provides a low resistance electrical path between the conductors in the presence of a leak. In another approach, the detection devices include a pair of dissimilar metal mesh electrodes separated by an electrolyte-impregnated wicking material to form a water-activated battery that energizes an alarm in the presence of a leak. In either case, the electrodes and wicking material may be encased with a water-activated sealing material that hardens in the presence of a leak to contain the leakage.

The invention discloses a multi-cycle stirring egg-shaped anaerobic fermentation system. The system comprises a fermentation tank body and a driving device arranged on the fermentation tank body, wherein the fermentation tank body is egg-shaped, the center of the inner cavity of the fermentation tank body is provided with an inner barrel type spiral stirrer, the outside of the inner barrel type spiral stirrer is provided with a stirrer inner barrel, a temperature heating device is arranged between the wall of the fermentation tank body and the stirrer inner barrel, the bottom of the inside ofthe tank is provided with an umbrella-shaped gas flow distribution device; the upper part of the fermentation tank body is provided with a vent pipe and a pressure control device, the bottom of the fermentation tank body is provided with an umbrella-shaped gas flow distribution device gas inlet pipe and a mud-discharging and sand-discharging outlet; and the side wall of the fermentation tank bodyis communicated with a biogas circulation system, a biogas slurry circulation system, a gas-liquid circulation system, a heating system, a temperature control system and a biogas residue and biogas slurry storage pool respectively. The multi-cycle stirring egg-shaped anaerobic fermentation system adopts multi-cycle stirring to increase the stirring efficiency of the system; and the anaerobic fermentation environment is improved, the fluid is mixed evenly, the temperature difference slightly fluctuates, the energy consumption of the system is low, the fermentation rate is high and the system is suitable for popularization and application.

A liquid droplet ejecting head capable of efficiently removing air bubbles while maintaining liquid circulation efficiency, and an image forming apparatus are provided. Plural supply-side common flow channels and circulation-side common flow channels are disposed alternately, and plural pressure-chambers that each communicates with the supply-side common flow channel via an ink supply channel are provided. The plural pressure-chambers each communicates with the circulation-side common flow channel via an ink circulation channel. A bypass flow channel, connecting the supply-side common flow channel and the circulation-side common flow channel disposed adjacent thereto, and flowing the ink from the supply-side common flow channel to the circulation-side common flow channel, is provided at an end portion at the most downstream side of the supply-side common flow channel. Thus, air bubbles remaining in the supply-side common flow channel flows into the circulation-side common flow channel through the bypass flow channel together with the ink.

In various illustrative examples, the system may include heat recovery heat exchangers, one or more turbines or expanders, a desuperheater heat exchanger, a condenser heat exchanger, a separator, an accumulator, and a liquid circulating pump, etc. In one example, a bypass desuperheater control valve may be employed. The system comprises a first heat exchanger adapted to receive a heating stream from a heat source after passing through a second heat exchanger and a second portion of a working fluid, wherein, the second portion of working fluid is converted to a hot liquid via heat transfer. An economizer heat exchanger that is adapted to receive a first portion of the working fluid and the hot discharge vapor from at least one turbine may also be provided. The first and second portions of the working fluid are recombined in a first flow mixer after passing through the economizer heat exchanger and first heat exchanger, respectively. A second heat exchanger is provided that receives the working fluid from the first flow mixer and a hot heating stream from a heat source and convert the working fluid to a hot vapor. The hot vapor from the second heat exchanger is supplied to at least one turbine after passing through a separator designed to insure no liquid enters the said at least one turbine or expander. The hot, high pressure vapor is expanded in the turbine to produce mechanical power on a shaft and is discharged as a hot, low pressure vapor.

In various illustrative examples, the system may include heat recovery heat exchangers, one or more turbines or expanders, a desuperheater heat exchanger, a condenser heat exchanger, a separator, an accumulator, and a liquid circulating pump, etc. In one example, a bypass desuperheater control valve may be employed. The system comprises a first heat exchanger adapted to receive a heating stream from a heat source after passing through a second heat exchanger and a second portion of a working fluid, wherein, the second portion of working fluid is converted to a hot liquid via heat transfer. An economizer heat exchanger that is adapted to receive a first portion of the working fluid and the hot discharge vapor from at least one turbine may also be provided. The first and second portions of the working fluid are recombined in a first flow mixer after passing through the economizer heat exchanger and first heat exchanger, respectively. A second heat exchanger is provided that receives the working fluid from the first flow mixer and a hot heating stream from a heat source and convert the working fluid to a hot vapor. The hot vapor from the second heat exchanger is supplied to at least one turbine after passing through a separator designed to insure no liquid enters the said at least one turbine or expander. The hot, high pressure vapor is expanded in the turbine to produce mechanical power on a shaft and is discharged as a hot, low pressure vapor.

In order to prevent, in an operation for circulating liquid, an ejection port from sucking air or the ejection port from pushing out liquid, the subtank for temporally storing ink to be supplied to the ink jet head includes the air communication passage opened or closed by the air communication valve. The ink jet head is communicated with the subtank by the first passage and the second passage to constitute one circulation passage. In order to circulate the ink in the subtank into the common liquid chamber, the main pump is energized while the air communication valve is being closed. When the circulation operation is stopped, the air communication valve is opened immediately after the stoppage of the main pump, thereby eliminating the differential pressure between the common liquid chamber and the subtank within a short period of time.

The invention discloses a visual-model testing apparatus and testing method for seepage-stress-coupled internal piping penetration. The testing apparatus is composed of four parts, i.e., a variable-head control and liquid circulation system, a vertical loading and penetration system, a laser control system and an image acquisition system and can carry out experimental study on internal piping penetration of non-steady seepage under the conditions of different stresses, different contents of fines, different grading and the like and research on the characteristics of particle loss and deformation and fracture in the process of seepage. The invention also provides a visual testing method for seepage-stress-coupled simulated erosion-type internal piping. According to the method, head difference is applied to a piping soil sample in a stress field in the vertical loading and penetration system in virtue of the variable-head control and liquid circulation system, so a seepage-erosion-stress three-field coupled internal piping test is realized. The visual-model testing apparatus and testing method provided by the invention are simple in procedure, easy in fabrication, capable of realizing direct and in-depth observation, economic and good in operability, so the meso-scopic mechanism of seepage-stress-coupled internal piping is revealed preliminarily, and a testing foundation is provided for subsequent research.

The invention belongs to the field of sewage treatment, and particularly relates to a waste water treatment method and device based on forward osmosis and membrane distillation. The waste water treatment method based on the forward osmosis and membrane distillation comprises a waste water concentration process and a drive liquid circulation process, wherein the waste water concentration process adopts a forward osmosis technology to concentrate waste water with high salt content and high chemical oxide demand (COD) concentration through drive liquid so as to obtain the concentrated waste water and diluted drive liquid; the drive liquid circulation process adopts a membrane distillation technology to dehydrate the diluted drive liquid so as to obtain the purified water and renewable drive liquid; and the renewable drive liquid is repeatedly used for the waste water concentration process so as to continuously concentrate the waste water. Due to the adoption of the method and device for treating the waste water with high salt content and high COD concentration, the waste water of different sources and fields can be treated, and the advantages such as wide applicability for waste water, stability in running and low treatment cost can be realized.

The invention belongs to the field of oil and gas field development and relates to a tractor used for drilling, logging and well repair engineering of a coiled tubing and favorable for the coiled tubing to extend into a horizontal well section for a longer distance. A motor-driven underground tractor for the coiled tubing comprises an upper tractor system, a hexagonal central sliding pipe and a lower tractor system, wherein the upper tractor system comprises an upper supporting unit, an upper electric drive and control unit and an upper traction unit; and the upper tractor system and the lower tractor system have the same structure, and are connected at the upper part and the lower part of the hexagonal central sliding pipe respectively in a sleeving way and mounted in the same or opposite direction. The tractor is directly driven and controlled by a servo stepper motor, so that the dependence on liquid energy in the process of driving the tractor by using circulating liquid and the complexity of control of a hydraulic valve of the circulating liquid on a pipeline are reduced and most of space occupied by the hydraulic pipeline is saved; and the tractor can perform dual-direction traction, is good in stability, flexible in traction and fast in traction speed, can be suitable for underground traction work of small well holes, and can guarantee normal underground liquid circulation in the traction process.

The invention relates to an electrombile thermal management system which is combined with cooling of a power device and belongs to the layout field. The electrombile thermal management system comprises a motor cooling liquid circulation system, an air conditioner refrigerating fluid circulation system and a battery pack cooling liquid circulation system. The battery pack cooling liquid circulation system comprises a second water pump, a three-position four-way water valve, a fuel heater, a two-position three-way water valve, a battery pack and a second water tank, wherein the second water pump, the three-position four-way water valve, the fuel heater, the two-position three-way water valve, the battery pack and the second water tank are sequentially connected in a circulated mode, two output ends of the three-position four-way water valve are connected with the input end of the air conditioner refrigerating fluid circulation system and the input end of a battery pack radiator respectively, one output end of the two-position three-way water valve is connected with the input end of a heater core, the output end of the battery pack radiator, the output end of the heater core and the output end of the air conditioner refrigerating fluid circulation system are all connected with the input end of a battery pack, and the heater core is arranged on one side of an electrombile carriage. By means of the electrombile thermal management system, cooling on a motor, a motor controller and a vehicle-mounted charging module can be achieved, and refrigeration and heating on an in-vehicle air conditioner system and temperature control over the battery pack can be achieved.

A wastewater treatment system has two separate but interlinked tanks containing four different zones, namely aerobic, microaerophilic, anoxic and anaerobic, for the biological treatment of the wastewater, as well as two clarification zones and a filtration unit for separation of solids from liquid. The first tank contains the aerobic, microaerophilic and anoxic zone as well as a clarification zone, while the second dank includes the anaerobic zone, a solid-liquid separation zone and a filtration unit. The aerobic zone is an airlift reactor that contains air diffusers at the bottom of the zone to introduce air into the zone. The air bubbles mix the liquid and its content of microorganisms, and provide oxygen for the aerobic biological processes that take place in this zone. Aeration also produces circulation of liquid between the aerobic zone and its adjacent microaerophilic and anoxic zones that are located at the sides and under the aerobic zone, respectively. The aerobic zone contains suspended microorganisms of heterotrophic and autotrophic groups that grow inside the circulating liquid, known as mixed liquor. Within the volume of the aerobic zone, loose carrier material or stationary objects are disposed to support the attachment of microbial biomass and the formation of microbial biofilm.

A liquid-ejecting head includes a channel which is in communication with a nozzle opening and which includes a pressure-generating chamber, a circulation channel that serves to circulate a liquid in the channel, and a pressure generator that serves to generate pressure change. The circulation channel has a narrow portion including a first wall and a second wall, the first wall tilting with respect to a forward direction of a liquid flows and serving to gradually decrease the cross-sectional area, the second wall tilting with respect to the flow direction and serving to gradually increase the cross-sectional area. The tilt angle of the first wall with respect to the inner surface of the circulation channel is larger than the tilt angle of the second wall with respect to the inner surface of the circulation channel at the downstream side.

A wafer stage for use in a wafer processing apparatus having a liquid cooling jacket with a built-in coolant liquid circulation path and a ceramic plate as attached onto the liquid cooling jacket and having therein a heater and an electrode for an electrostatic chuck. The wafer stage enables performance of wafer processing while letting a wafer be mounted on the ceramic plate. The liquid cooling jacket enables attachment of the ceramic plate through a gap for circulation of a coolant gas as formed over the liquid cooling jacket, and a heat resistant seal material containing therein an elastic body for sealing the coolant gas between the liquid cooling jacket and the ceramic plate.

A storage compartment cooling apparatus includes a liquid circulation system that circulates a liquid coolant, a heat exchanger that cools an interior of a storage compartment using the liquid coolant, a bypass line through which the liquid coolant selectively bypasses the heat exchanger, one or more valves that controllably increase and decrease the flow of the liquid coolant through the heat exchanger and the bypass line, and a controller that controls the one or more valves. A storage compartment cooling system includes a liquid coolant distribution loop that distributes a chilled liquid coolant to a plurality of the storage compartment cooling apparatuses coupled in series and a recirculation cooling device that includes a chiller that chills the liquid coolant to have a temperature lower than an ambient temperature and a circulation unit that circulates the chilled liquid coolant through the liquid coolant distribution loop. A method of controlling the storage compartment cooling system includes reversing a direction of flow of the liquid coolant in the liquid coolant distribution loop.

The invention relates to a method and an apparatus for cooling a material to be removed from the grate of a fluidized bed furnace. Material at a high temperature is passed from the grate of the fluidized bed furnace into a fluidized bed cooler in charges of a given size by measuring the quantity of the material accumulating in the fluidized bed cooler. When the quantity of the material in the cooler has reached a predetermined limit value, the supply of material into the fluidized bed cooler is prevented. The charge is cooled in the fluidized bed cooler by fluidization air and via heat transfer into a cooling liquid circulation system and the temperature of the charge is measured. The charge is removed when the temperature of the charge has fallen to a predetermined limit value. The second end (5) of a supply conduit (3) is provided with a supply valve (15) actuated by a power means (16). A discharge conduit (14) is provided with a discharge valve (17) actuated by a second power means (18). Quantity detection means (19, 20) are provided to produce quantity data regarding the amount of material in a fluidized bed space (11), and temperature measuring means (21) are provided to produce temperature data. A control device (22) controls the first power means (16) to open and close the supply valve (15) and the second power means (18) to open and close the discharge valve (17) on the basis of the quantity data and temperature data and the predetermined limit values of quantity and temperature so that the loading of material into the fluidized bed space and its cooling and removal from the fluidized bed space take place in a charge-by-charge and cyclic manner.

An ink circulation system includes: an ink-jet head in which a shared ink flowing route is formed, an ink tank, a supply flowing route for supplying ink from the ink tank to the shared ink flowing route, a reflux flowing rout for refluxing the ink from the shared ink flowing route to the ink tank, and a differential pressure generating unit for generating a differential pressure in the ink tank. The differential pressure generating unit is equipped with an impeller placed inside the ink tank, and a drive unit placed outside the ink tank. Then, the drive unit operates to turn the impeller, by means of remote driving, for generating a differential pressure between a supply port of the supply flowing route and a reflux port of the reflux flowing route so as to circulate the ink through the ink flowing route.

A liquid ejecting head includes a plurality of nozzle openings, a first flow path, a supply path, a recovery path, a first filter, a second filter, and a second flow path. The nozzle openings eject a liquid, the first flow path is communicated with the plurality of nozzle openings and the liquid is circulated through the first flow path. The supply path supplies the liquid to the first flow path from the outside, and the recovery path recovers the liquid from the first flow path to the outside. The first filter is provided in the supply path and the second filter is provided in the recovery path. The second flow path connects the supply path provided in the upstream side of the first filter and the recovery path provided in downstream side of the second filter.

A liquid ejection device ejects liquid droplets from a liquid ejection head. The liquid ejection device includes a liquid feeding member that feeds liquid to the liquid ejection head. The liquid feeding member is connected to a liquid ejection head to feed liquid to a common liquid chamber of the liquid ejection head, which liquid ejection head includes the common liquid chamber that supplies the liquid to plural individual liquid chambers communicating with plural nozzles that eject liquid droplets. The liquid feeding member includes a liquid circulation path through which the liquid circulates in a direction parallel to a direction in which the nozzles of the liquid ejection head are aligned.

The invention relates to a comprehensive simulation experimental device of a drilling circulation system. The comprehensive simulation experimental device of the drilling circulation system comprises a drilling liquid circulation loop, a rock debris circulation branch, an air injection branch and a data collection system. The drilling liquid circulation loop is formed by an annulus testing section, a Parshall flume, a vibration screen, a liquid storage pool and a frequency changing pump. The rock debris circulation branch is formed by sequentially connecting an air propeller, a rock debris collection tank, a packing tank and a screw pump through pipelines, wherein the air propeller is arranged on the vibration screen, and the screw pump is connected to the position of an inlet of the annulus testing section through a pipeline. The air injection branch is formed by connecting an air storage tank and an air compressor through a pipeline, wherein the compressor is connected with a tee joint through a pipeline. By means of the comprehensive simulation experimental device of the drilling circulation system, the migration rule of annulus rock debris under different hole drift angles can be observed, and radial concentration of the annulus rock debris under different hole drift angles and grain composition of the annulus rock debris in different river basins can be quantitatively measured.

A cartridge-type ion removal filter 15 to remove ions from the cooling liquid in the cooling liquid circulation passage 20 is disposed in the middle of a cooling liquid circulation passage 20 to circulate the cooling liquid between a fuel cell stack 11 and a radiator 12. The ion removal filter 15 is disposed in the cooling liquid circulation passage so that an opening 26b of a vessel main body 26 is in a higher position than the highest level “H” of the cooling liquid in the reservoir tank 14.